{
  "resourceType": "StructureDefinition",
  "meta": {
    "versionId": "1",
    "lastUpdated": "2020-04-24T08:11:31.811+00:00"
  },
  "url": "http://example.org/fhir/StructureDefinition/iFoot_ABPI_Links",
  "name": "ABPI_Links",
  "title": "iFoot ABPI Links",
  "status": "draft",
  "date": "2021-06-30T08:28:51.1420687+00:00",
  "fhirVersion": "4.0.1",
  "kind": "resource",
  "abstract": false,
  "type": "Observation",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Observation",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Observation.identifier",
        "path": "Observation.identifier",
        "min": 1,
        "max": "1"
      },
      {
        "id": "Observation.code.coding.system",
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
            "valueCode": "normative"
          },
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
            "valueCode": "4.0.0"
          }
        ],
        "path": "Observation.code.coding.system",
        "fixedUri": "http://snomed.info/sct"
      },
      {
        "id": "Observation.code.coding.code",
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
            "valueCode": "normative"
          },
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
            "valueCode": "4.0.0"
          }
        ],
        "path": "Observation.code.coding.code",
        "fixedCode": "446841001"
      },
      {
        "id": "Observation.code.coding.display",
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
            "valueCode": "normative"
          },
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
            "valueCode": "4.0.0"
          }
        ],
        "path": "Observation.code.coding.display",
        "min": 1,
        "fixedString": "Ankle brachial pressure index"
      },
      {
        "id": "Observation.subject",
        "path": "Observation.subject",
        "type": [
          {
            "code": "Reference",
            "targetProfile": [
              "http://hl7.org/fhir/StructureDefinition/Patient"
            ]
          }
        ]
      },
      {
        "id": "Observation.value[x]",
        "path": "Observation.value[x]",
        "min": 1,
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      },
      {
        "id": "Observation.value[x].coding.system",
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
            "valueCode": "normative"
          },
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
            "valueCode": "4.0.0"
          }
        ],
        "path": "Observation.value[x].coding.system"
      },
      {
        "id": "Observation.value[x].coding.userSelected",
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
            "valueCode": "normative"
          },
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
            "valueCode": "4.0.0"
          }
        ],
        "path": "Observation.value[x].coding.userSelected",
        "fixedBoolean": false
      },
      {
        "id": "Observation.bodySite",
        "path": "Observation.bodySite",
        "min": 1
      },
      {
        "id": "Observation.bodySite.coding.system",
        "path": "Observation.bodySite.coding.system",
        "fixedUri": "http://snomed.info/sct"
      },
      {
        "id": "Observation.bodySite.coding.code",
        "path": "Observation.bodySite.coding.code",
        "fixedCode": "48979004"
      },
      {
        "id": "Observation.bodySite.text",
        "path": "Observation.bodySite.text",
        "min": 1,
        "fixedString": "Left leg"
      },
      {
        "id": "Observation.device",
        "path": "Observation.device",
        "max": "0"
      },
      {
        "id": "Observation.referenceRange",
        "path": "Observation.referenceRange",
        "max": "0"
      },
      {
        "id": "Observation.hasMember",
        "path": "Observation.hasMember",
        "max": "0"
      },
      {
        "id": "Observation.derivedFrom",
        "path": "Observation.derivedFrom",
        "max": "0"
      }
    ]
  }
}